This is a Casio watch which has black for its dial colour. The watch runs on batteries, so it's easy to maintain.
From F. Hinds
Casio G-Shock GD-350-1BER Multifunction Black Strap Watch - W17356
Watch Shop
Mens Casio 'G-Shock Vibrating Timer' Black and LCD Stainless Steel and Plastic/Resin Quartz Chronograph Chronometer Watch - LCD / Black